Njengengxenye eyinhloko yemishini ethile yokuzenzakalela, ukwethembeka nokuzinza kwesistimu yokulawula ukunyakaza kuthinta ngokuqondile ukusebenza kwemishini, futhi enye yezinto eziyinhloko ezithinta ukwethembeka nokuzinza kwayo kuyinkinga yokulwa nokuphazamiseka.Ngakho-ke, indlela yokuxazulula ngempumelelo inkinga yokuphazamiseka kuyinkinga engenakunakwa ekuklanyweni kwesistimu yokulawula ukunyakaza.
1. Ukuphazamiseka okwenzekayo
Kuhlelo lokusebenza, lezi zinto ezilandelayo eziyinhloko zokuphazamiseka zivame ukuhlangana nazo:
1. Uma uhlelo lokulawula lungakhiphi umyalo, injini ijikeleza ngokungavamile.
2. Uma i-servo motor ima ukunyakaza futhi isilawuli esinyakazayo sifunda indawo yenjini, inani elibuyiswe isishumeki sesithombe sikagesi ekupheleni kwenjini ligxuma ngokungahleliwe.
3. Uma i-servo motor isebenza, inani le-encoder efundiwe alifani nenani lomyalo okhishiwe, futhi inani lephutha alihleliwe futhi alijwayelekile.
4. Uma i-servo motor isebenza, umehluko phakathi kwevelu yesifaki khodi esifundiwe kanye nenani lomyalo okhishiwe uyinani elizinzile noma liyashintsha ngezikhathi ezithile.
5. Okokusebenza okwabelana ngokuphakelwa kwamandla okufanayo nesistimu ye-AC servo (efana nesibonisi, njll.) ayisebenzi kahle.
2. Ukuhlaziywa komthombo wokuphazanyiswa
Kunezinhlobo ezimbili eziyinhloko zamashaneli eziphazamisa ukungena ohlelweni lokulawula ukunyakaza:
1, ukuphazamiseka kwesiteshi sokudlulisa isignali, ukuphazamiseka kungena ngeshaneli yokufaka isignali kanye nesiteshi esiphumayo esixhunywe ohlelweni;
2, ukuphazamiseka kwesistimu yokuphakelwa kwamandla.
Isiteshi sokudlulisa isignali siyindlela yokuthi uhlelo lokulawula noma umshayeli athole amasignali empendulo futhi athumele amasignali okulawula, ngoba i-pulse wave izobambezeleka futhi ihlanekezelwe emugqeni wokudlulisela, ukuncishiswa nokuphazanyiswa kwesiteshi, kwinqubo yokudlulisela, isikhathi eside. ukuphazamiseka kuyisici esiyinhloko.
Kukhona ukumelana kwangaphakathi kunoma yikuphi ukunikezwa kwamandla kanye nemigqa yokudlulisela.Yilokhu kumelana kwangaphakathi okubangela ukuphazamiseka komsindo wokunikezwa kwamandla.Uma kungekho ukumelana kwangaphakathi, kungakhathaliseki ukuthi hlobo luni lomsindo oluzothathwa yi-short-circuit yamandla, akukho voltage yokuphazamiseka ezosungulwa kulayini., Umshayeli wesistimu ye-AC servo ngokwayo futhi ungumthombo oqinile wokuphazamiseka, angaphazamisa ezinye izinto zokusebenza ngokusebenzisa ukunikezwa kwamandla.
Uhlelo Lokulawula Ukunyakaza
Ezintathu, izinyathelo zokulwa nokuphazamiseka
1. Idizayini yokunqanda ukuphazamiseka kohlelo lokuphakelwa kwamandla
(1) Sebenzisa ukunikezwa kwamandla ngamaqembu, isibonelo, hlukanisa amandla okushayela enjini kumandla okulawula ukuvimbela ukuphazamiseka phakathi kwemishini.
(2) Ukusetshenziswa kwezihlungi zomsindo nakho kungacindezela ngempumelelo ukuphazamiseka kwamadrayivu e-AC servo kwezinye izinto zokusebenza.Lesi silinganiso singacindezela ngempumelelo izenzakalo zokugxambukela ezishiwo ngenhla.
(3) I-transformer yokuhlukanisa yamukelwa.Uma kucatshangelwa ukuthi umsindo we-high-frequency udlula ku-transformer ikakhulukazi hhayi ngokuhlangana kwe-mutual inductance yamakhoyili ayisisekelo nesesibili, kodwa ngokuhlanganisa amandla e-parasitic ayisisekelo kanye nesesibili, izinhlangothi eziyisisekelo nesesibili ze-transformer yokuzihlukanisa zihlukaniswe izingqimba zokuvikela. ukunciphisa amandla abo Okusabalalisa ukuthuthukisa ikhono lokumelana nokuphazamiseka kwemodi evamile.
2. Idizayini yokulwa nokuphazamiseka kwesiteshi sokudlulisa isignali
(1) Izinyathelo zokuhlukanisa i-photoelectric coupling
Enqubweni yokudluliswa kwebanga elide, ukusetshenziswa kwama-photocouplers kunganqamula ukuxhumana phakathi kwesistimu yokulawula kanye neshaneli yokufaka, ishaneli yokukhiphayo, namashaneli okokufaka nokukhiphayo edrayivu ye-servo.Uma i-photoelectric isolation ingasetshenziswa kumjikelezo, isignali yokuphazamiseka kwe-spike yangaphandle izongena ohlelweni noma ingene ngokuqondile kudivayisi ye-servo drive, ibangele ukwenzeka kokuqala kokuphazamiseka.
Inzuzo enkulu yokuhlanganiswa kwe-photoelectric ukuthi ingakwazi ukucindezela ngempumelelo ama-spikes nokuphazamiseka okuhlukahlukene komsindo,
Ngakho-ke, isilinganiso sesignali-kuya-kumsindo kunqubo yokudlulisa isignali sithuthukiswa kakhulu.Isizathu esiyinhloko siwukuthi: Nakuba umsindo wokuphazamiseka une-amplitude enkulu ye-voltage, amandla awo mancane futhi angenza kuphela i-current ebuthakathaka.I-diode ekhipha ukukhanya yengxenye yokufaka ye-photocoupler isebenza ngaphansi kwesimo samanje, futhi i-conduction current jikelele ingu-10-15mA, ngakho-ke Ngisho noma kukhona ukuphazamiseka kwe-amplitude ephezulu, iyacindezelwa ngoba ayikwazi ukunikeza okwamanje okwanele.
(2) Izintambo ezivikelwe eziphothiwe kanye nezidlulisa izintambo ezinde
Isignali izothinteka yizici zokuphazamiseka ezifana nenkundla kagesi, indawo kazibuthe kanye ne-impedance yomhlabathi ngesikhathi sokudlulisa.Ukusetshenziswa kocingo oluyisivikelo olusekelwe phansi kunganciphisa ukuphazamiseka kwenkundla kagesi.
Uma kuqhathaniswa nentambo ye-coaxial, ikhebula elisontekile linebhendi yefrikhwensi ephansi, kodwa inokuvinjelwa kwegagasi okuphezulu nokumelana okuqinile nomsindo wemodi evamile, engakhansela ukugxambukela kokungeniswa kuka-electromagnetic.
Ukwengeza, ohlelweni lokudluliswa kwebanga elide, ukudluliswa kwesignali ehlukile ngokuvamile kusetshenziselwa ukuthuthukisa ukusebenza kokuphikisana nokuphazamiseka.Ukusetshenziswa kwezintambo ezivikelwe ezisontekile ekudluliselweni kwezintambo ezinde kungacindezela ngempumelelo isenzakalo sokuphazanyiswa sesibili, sesithathu, nesine.
(3) Umhlabathi
Ukubeka phansi kungaqeda amandla kagesi omsindo akhiqizwa lapho i-current igeleza ocingweni lwaphansi.Ngaphezu kokuxhuma isistimu ye-servo phansi, ucingo oluvikela isignali kufanele futhi lubekwe phansi ukuze kuvinjwe ukungeniswa kwe-electrostatic kanye nokuphazamiseka kazibuthe kagesi.Uma ingagxiliwe kahle, into yesibili yokuphazamiseka ingase yenzeke.
Isikhathi sokuthumela: Mar-06-2021